21639240

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{277}}^1$

素因数の和:332

約数の個数: 192

約数和(自身を含む): 83266560

約数和(自身を除く): 61627320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 31, 35, 36, 40, 42, 45, 56, 60, 62, 63, 70, 72, 84, 90, 93, 105, 120, 124, 126, 140, 155, 168, 180, 186, 210, 217, 248, 252, 277, 279, 280, 310, 315, 360, 372, 420, 434, 465, 504, 554, 558, 620, 630, 651, 744, 831, 840, 868, 930, 1085, 1108, 1116, 1240, 1260, 1302, 1385, 1395, 1662, 1736, 1860, 1939, 1953, 2170, 2216, 2232, 2493, 2520, 2604, 2770, 2790, 3255, 3324, 3720, 3878, 3906, 4155, 4340, 4986, 5208, 5540, 5580, 5817, 6510, 6648, 7756, 7812, 8310, 8587, 8680, 9695, 9765, 9972, 11080, 11160, 11634, 12465, 13020, 15512, 15624, 16620, 17174, 17451, 19390, 19530, 19944, 23268, 24930, 25761, 26040, 29085, 33240, 34348, 34902, 38780, 39060, 42935, 46536, 49860, 51522, 58170, 60109, 68696, 69804, 77283, 77560, 78120, 85870, 87255, 99720, 103044, 116340, 120218, 128805, 139608, 154566, 171740, 174510, 180327, 206088, 232680, 240436, 257610, 300545, 309132, 343480, 349020, 360654, 386415, 480872, 515220, 540981, 601090, 618264, 698040, 721308, 772830, 901635, 1030440, 1081962, 1202180, 1442616, 1545660, 1803270, 2163924, 2404360, 2704905, 3091320, 3606540, 4327848, 5409810, 7213080, 10819620, 21639240]

約数ペア:

[(1, 21639240), (2, 10819620), (3, 7213080), (4, 5409810), (5, 4327848), (6, 3606540), (7, 3091320), (8, 2704905), (9, 2404360), (10, 2163924), (12, 1803270), (14, 1545660), (15, 1442616), (18, 1202180), (20, 1081962), (21, 1030440), (24, 901635), (28, 772830), (30, 721308), (31, 698040), (35, 618264), (36, 601090), (40, 540981), (42, 515220), (45, 480872), (56, 386415), (60, 360654), (62, 349020), (63, 343480), (70, 309132), (72, 300545), (84, 257610), (90, 240436), (93, 232680), (105, 206088), (120, 180327), (124, 174510), (126, 171740), (140, 154566), (155, 139608), (168, 128805), (180, 120218), (186, 116340), (210, 103044), (217, 99720), (248, 87255), (252, 85870), (277, 78120), (279, 77560), (280, 77283), (310, 69804), (315, 68696), (360, 60109), (372, 58170), (420, 51522), (434, 49860), (465, 46536), (504, 42935), (554, 39060), (558, 38780), (620, 34902), (630, 34348), (651, 33240), (744, 29085), (831, 26040), (840, 25761), (868, 24930), (930, 23268), (1085, 19944), (1108, 19530), (1116, 19390), (1240, 17451), (1260, 17174), (1302, 16620), (1385, 15624), (1395, 15512), (1662, 13020), (1736, 12465), (1860, 11634), (1939, 11160), (1953, 11080), (2170, 9972), (2216, 9765), (2232, 9695), (2493, 8680), (2520, 8587), (2604, 8310), (2770, 7812), (2790, 7756), (3255, 6648), (3324, 6510), (3720, 5817), (3878, 5580), (3906, 5540), (4155, 5208), (4340, 4986)]